19311952704 has 56 divisors (see below), whose sum is σ = 55741324128. Its totient is φ = 5852106240.

The previous prime is 19311952657. The next prime is 19311952711. The reversal of 19311952704 is 40725911391.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4569847 + ... + 4574070.

It is an arithmetic number, because the mean of its divisors is an integer number (995380788).

Almost surely, 2^19311952704 is an apocalyptic number.

It is an amenable number.

19311952704 is an abundant number, since it is smaller than the sum of its proper divisors (36429371424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19311952704 is a wasteful number, since it uses less digits than its factorization.

19311952704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9143943 (or 9143933 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 42.

The spelling of 19311952704 in words is "nineteen billion, three hundred eleven million, nine hundred fifty-two thousand, seven hundred four".